He is known for both his breakthroughs in theoretical physics as well as his ability to make complex concepts accessible for all, and was beloved for his mischievous sense of humor. At the time of his death, Hawking was working on a final project: a book compiling his answers to the "big" questions that he was so often posed--questions that ranged beyond his academic field. Within these pages, he provides his personal views on our biggest challenges as a human race, and where we, as a planet, are heading next. Each section will be introduced by a leading thinker offering his or her own insight into Professor Hawking's contribution to our understanding.

    Much more than the "facts of life" or “the birds and the bees," Sex Is a Funny Word opens up conversations between young people and their caregivers in a way that allows adults to convey their values and beliefs while providing information about boundaries, safety, and joy.The eagerly anticipated follow up to Lambda-nominated What Makes a Baby, from sex educator Cory Silverberg and artist Fiona Smyth, Sex Is a Funny Word reimagines "sex talk" for the twenty-first century.

    From dazzling blue lapis lazuli to volcanic snowflake obsidian, an incredible variety of rocks are showcased in all their splendor. Poetic in voice and elegant in design, this book introduces an array of facts, making it equally perfect for classroom sharing and family reading.

    Beloved children's book author Stacy McAnulty helps Earth tell her story, and award-winning illustrator David Litchfield brings the words to life. The book includes back matter with even more interesting tidbits.

    There's no need to look through dozens of photos of birds that don't live in Wisconsin. This book features 111 species of Wisconsin birds, organized by color for ease of use. Do you see a yellow bird and don't know what it is? Go to the yellow section to find out. Fact-filled information, a compare feature, range maps and detailed photographs help to ensure that you positively identify the birds that you see.

    In this visionary book, noted planetary scientist John S. Lewis explains how we can mine these precious metals from the asteroids, comets, and planets in our own solar system for use in space construction projects. And this is just one of the possibilities. Join John S. Lewis as he contemplates milking the moons of Mars for water and hollowing out asteroids for space-bound homesteaders—all while demonstrating the economic and technical feasibility of plans that were once considered pure fiction.

    A full-color chapter book biography that shows how a self-taught scientist was the first to observe the microbial life in and around us. By building his own microscope, Antony van Leeuwenhoek advanced humanity's understanding of our oft-invisible world around us.

    What is the difference between weather and climate? How do weather satellites help us predict the future? Can someone outrun a tornado? Does the rotation of the Earth affect wind currents? And does meteorology have anything to do with meteors? Stormin’ Norman Weatherby is gearing up to answer all your wildest questions!Get ready to explore the depths of the ocean, the farthest reaches of space, and everything in between! These gorgeously illustrated graphic novels offer wildly entertaining views of their subjects. Whether you're a fourth grader doing a natural science unit at school or a thirty-year-old with a secret passion for airplanes, Science Comics is for you!

    In October 2015, NASA declared Mars “an achievable goal”; that same season, Ridley Scott and Matt Damon’s The Martian drew crowds into theaters, grossing over $200 million.Now the National Geographic Channel fast forwards years ahead with Mars, a six-part series documenting and dramatizing the next twenty-five years as humans land on and learn to live on Mars. Following on the visionary success of Buzz Aldrin’s Mission to Mars and the visual glory of Marc Kaufman’s Mars Up Close, this companion book to the Nat Geo series shows the science behind the mission and the challenges awaiting those brave individuals.The book combines science, technology, and storytelling, offering what only National Geographic can create. Clear scientific explanations make the Mars experience real and provide amazing visuals to savor and return to again and again.

    While they're at it, they helpfully demystify many complicated things we do know about, from quarks and neutrinos to gravitational waves and exploding black holes. With equal doses of humor and delight, they invite us to see the universe as a vast expanse of mostly uncharted territory that's still ours to explore.This entertaining illustrated science primer is the perfect book for anyone who's curious about all the big questions physicists are still trying to answer.

    You'll learn how to construct houses, bridges, ships, floating islands and rollercoasters of the highest quality.

    Someday, we know, we will all die. And, we know, so too will the universe itself.Until the End of Time is Brian Greene's breathtaking new exploration of the cosmos and our quest to understand it. Greene takes us on a journey across time, from our most refined understanding of the universe's beginning, to the closest science can take us to the very end. He explores how life and mind emerged from the initial chaos, and how our minds, in coming to understand their own impermanence, seek in different ways to give meaning to experience: in story, myth, religion, creative expression, science, the quest for truth, and our longing for the timeless, or eternal. Through a series of nested stories that explain distinct but interwoven layers of reality-from the quantum mechanics to consciousness to black holes-Greene provides us with a clearer sense of how we came to be, a finer picture of where we are now, and a firmer understanding of where we are headed.Yet all this understanding, which arose with the emergence of life, will dissolve with its conclusion. Which leaves us with one realization: during our brief moment in the sun, we are tasked with the charge of finding our own meaning.Let us embark.

    Quirky full-color illustrations portray dozens of birds chatting about their distinctive characteristics, including color, shape, plumage, and beak and foot types, while tongue-in-cheek cartoons feature banter between birds, characters, and the reader ("Here I am, the noble spruce grouse. In a spruce grove. Eatin’ some spruce. Yep."). Interactive and enjoyable tips bring an age-old hobby to new life for the next generation of bird-watchers.

    Targeted to rock-crazy kids, this bold book is more energetic, more visually exciting, and more fun than anything else on the market—and with more information, too! Youngsters become geology experts as they browse eye-popping photos and absorb layers of information made extra fun through a humor-infused presentation.National Geographic supports K-12 educators with ELA Common Core Resources.Visit www.natgeoed.org/commoncore for more information.

    An attractive and informative volume for young stargazers.” —Kirkus Reviews“Manley’s writing swings gracefully between factual descriptions … and more lyrical observations: “All stars twinkle, but some stars also seem to wink at us... as if saying, ‘I know a secret.’ ” … Richly informative prose and intimate yet expansive art show a child’s contagious enthusiasm for the book’s subject. Includes a timeline of astronomical discoveries and suggestions for further reading.” —Publishers WeeklyDo you wonder if humansare the only beingswho wonderif they are alone in the universe?Our sun is a star.In the night sky are all kinds of stars, and orbiting those starsare planets like the ones in our own solar system.Could those planets have lifelike we do on Earth?Planet Earth is not too big, not too small, not too hot, and not too cold. It's just right.Our very own Goldilocks planet . . . .Follow a young girlas she explores these questionsin this gorgeous book about the wondrous searchfor another Goldilocks planet.